Yesterday, I was at the Einstein Tower in Potsdam. The “Einsteinturm” was planned and built in the years 1919 to 1924 by the famous architect Erich Mendelsohn. The Einstein Tower is a functional building, a solar observatory and until the second World War the most prominent research institution of that kind in Europe. A substantial overhaul of the Einstein Tower started in November 1997 and it was re-opened in 1999. I think it was pretty crowded by tourists there during the Einstein Year 2005, so, yesterday was my first time at the site which gave me the opportunity to record a little wobbling video.